diff --git a/pkgs/servers/nosql/cassandra/2.1.nix b/pkgs/servers/nosql/cassandra/2.1.nix
index 6c09c977d29..5e9a57bfe55 100644
--- a/pkgs/servers/nosql/cassandra/2.1.nix
+++ b/pkgs/servers/nosql/cassandra/2.1.nix
@@ -11,8 +11,8 @@
 
 let
 
-  version = "2.1.14";
-  sha256 = "168rg8gg1dhcjfjsr1jbfx4zj3zyqn0xi2z1j2c8jn6054486ybg";
+  version = "2.1.15";
+  sha256 = "1yc6r4gmxz9c4zghzn6bz5wswz7dz61w7p4x9s5gqnixfp2mlapp";
 
 in